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Oil Pressure, how does this look?
After careful discussion with Vinny and Tom (Vinman & razorback) i made the change from M1 5w-30 to 15w-50
important to mention the car has no major leaks, and has been running very well. After the oil change the pressure is a little higher than what im used to. The engine is a rebuilt 85.5 engine, temp today here in NJ was about 75 degrees and the car was fully warmed up. Cruising around 1900-2500 RPMs 4.5 - 4.75 bar Idle 800RMP 2.5- 2.75 bar going slow 1500 RPM 4 bar does this jive with you guys? im pretty paranoid about this oil weight change but a lot of users here were telling me that 5w-30 just wasnt the right weight to be running in jersey all year around..
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1995 993 C2 Last edited by EMBPilot; 06-12-2007 at 06:00 PM.. |
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06-12-2007, 12:47 PM
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That is the pressure that I have gotten on my guage for the past 3 years I have had the car. So if it's not good then it doesn't seem to matter to my car. If anything the car is running much better than when I bought it. I think your numbers are fine.
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John '87 944 N/A (first Porsche) '95 E-350 Diesel '03 S-Type Jag 3.0 '03 Taurus SES '06 Eddie Bauer Explorer RIP SoCal |
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06-12-2007, 12:55 PM
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Looks good to me. I run 20/50 here in Maryland and get the same numbers. btw. who were you cursing at going 1900 to 2500?
Last edited by martin944; 06-12-2007 at 12:58 PM.. |
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06-12-2007, 12:56 PM
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okay cool, thanks for the feed back, clarks garage used to list ball park oil figures but i couldnt seem to find them.
the values with the 5w-30 were a bit lower than these, running around 4 bar and idling around 2 bar. I have no idea why the PO and the guy before him have run 5w-30? i hate rocking the boat but so many users (including the books) say that 'something heavier' than 5w-30 is recommended. thanks guys!
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1995 993 C2 Last edited by EMBPilot; 06-12-2007 at 01:01 PM.. |
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06-12-2007, 12:57 PM
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http://www.clarks-garage.com/shop-manual/lube-03.htm
In the "Garage Shop Manual" section under "Oil Pressure" then under "General Information and Troubleshooting." Look it up for a more detailed answer. 
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John '87 944 N/A (first Porsche) '95 E-350 Diesel '03 S-Type Jag 3.0 '03 Taurus SES '06 Eddie Bauer Explorer RIP SoCal |
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06-12-2007, 01:01 PM
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Mine is actually a little lower than that, but I am running Rotella T Synthetic 5W40. Has been that way for the last 2 years or so and car seems happy. My theory is to run the lightest weight oil that keeps the oil pressure within spec. I like the Rotella because of the extra ZDDP, if the cat goes then oh well.
nate
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1988 944... and a bunch of other cars
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06-12-2007, 02:55 PM
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993 C2
